IDRACLEAN F900 B CLEANER AND PASSIVER FOR SUMMER SIDE SURFACES IN THE PRIMARY EXCHANGER OF ALUMINUM - SILICON CONDENSING BOILERS AFTER USING THE IDRACLEAN F900 - A Cleaning Admixture: IDRACLEAN F900 B should be sprayed onto the surfaces, allowed to react for 5 - 15 minutes. Rinse with water. Do not wet the insulating material (damaged by the product). RESTORING THE CORRECT THERMAL EXCHANGE CONTRIBUTES TO ENERGY SAVING Dosage: Clean the dirt thoroughly on surfaces to clean Environmental and accident information: Follow the directions on the packaging or on the safety data sheet.